I AM YOU is hosted by Dr. Nitza I. Alvarez, MD, FACC — board-certified cardiologist, Women’s Heart Specialist, and bestselling author. Each episode shares real stories and expert insights to help women protect the heart that carries them through every stage of life — and step into their power as the CEO of their own health.  

In this episode, Dr. Alvarez unpacks one of the most frustrating and misunderstood changes many women experience in midlife: weight gain that seems to happen despite eating better, exercising, and doing everything “right.” If your body feels like it is no longer responding the way it used to, this episode explains why the issue may not be your discipline — it may be your physiology.  

Dr. Alvarez explains how hormonal and metabolic changes during perimenopause can alter the way the body uses energy, stores fat, and responds to stress. She breaks down three major drivers that may be blocking weight loss: insulin resistance, fluctuating estrogen, and elevated cortisol. She also explains why fat gain around the abdomen is not just a cosmetic concern, but a potential cardiovascular warning sign tied to inflammation, metabolic syndrome, and heart risk.    

With clarity and urgency, she breaks down:

• Why insulin resistance can keep the body in fat-storage mode
• Why estrogen changes during perimenopause shift fat toward the abdomen
• How chronic stress and elevated cortisol disrupt sleep, metabolism, and weight regulation
• Why eating less is not always the answer — and how overly restrictive dieting can backfire
• Why midlife weight gain is not inevitable failure, but a biological signal that can be addressed
• Why abdominal fat is metabolically active and linked to cardiovascular risk
• What lab work may help uncover the real issue, including fasting insulin, hemoglobin A1c, thyroid testing, and estradiol
• Practical steps to support metabolic health, including prioritizing protein, strength training, sleep, stress management, and hormone evaluation    

This episode is a powerful reminder that weight that will not budge is rarely just about willpower. More often, it is information. Your body may be signaling that something in your metabolic system has shifted — and when you understand that signal, you can take action early to protect your long-term health. Becoming the CEO of your own health starts with listening to your body and asking better questions.  

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